Application:Support all types of telescopes, reflector, refractor, to observe the star clusters, moon, sky, planets and other celestial bodies. 35 Degree Field of View:Wide viewing field with extra sharpness and long eye relief. Fully Coated:high quality optical glass for maximum brightness. Suitable for 0.965inch/24.5mm telescope eyepiece filters.<br><br>Colour:Black+silver Material:Optical glass + metal Size:0.96 inch / 24.5mm Focal Length:20 mm/0.79 inch Eyepiece Port: 4.7x2.8 cm/1.85x1.10 inch<br><br>Package Contents: 1 x Telescope Eyepiece<br><br>Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.